问题 解答题
灵活计算
1
3
-(
4
5
-
2
3
)
75÷
5
3
=25×
3
5
(
5
14
+
4
13
)×14-4÷13
(
5
12
-
13
36
2
3
+
1
6
答案

(1)

1
3
-(
4
5
-
2
3
),

=

1
3
-
4
5
+
2
3

=(

1
3
+
2
3
-
4
5

=1-

4
5

=

1
5

(2)75÷

5
3
-25×
3
5

=75×

3
5
-25×
3
5

=(75-25)×

3
5

=50×

3
5

=30;

(3)(

5
14
+
4
13
)×14-4÷13,

=

5
14
×14+
4
13
×14-
4
13

=5+(14-1)×

4
13

=5+13×

4
13

=5+4,

=9;

(4)(

5
12
-
13
36
2
3
+
1
6

=

1
18
÷
2
3
+
1
6

=

1
12
+
1
6

=

1
4

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